X4.casl.output revision 035384b063bfd4704a0944d1b2f1d817cc384693
(sorts Int, Nat, s
sorts Nat < Int
op 0 : Nat
op __-__ : Nat * Nat -> Int,
[forall v1 : Nat . def v1 - 0])
8.8: ### Hint: known variable shadowed 'a'
6.5: ### Warning: unused variable 'a'